Marxism and Feminism seem to live in parallel worlds, as if through a looking glass. Each seeks to end exploitation and oppression yet target differing aspects of them using different terms for similar phenomena. Orthodox Marxists might say that Feminism only targets part of the problem. And Feminists might point out how Marxism only reproduces male power. Those would be examples of sectarianism. Marxism and Feminism can be complementary in that Feminism can provide critiques of the failings of Marxism, whereas Marxism can point out possibilities for Feminism. Catherine Mackinnon's work is the clearest example of a necessary dialog between Feminism and Marxism and this article outlines her contribution to the struggle against exploitation of the Third World and oppression of women. Rather than answers I offer basic terminology (oppression versus exploitation; the principle contradiction) and above all: question marks: to Marxism I ask "what went wrong"? To Feminism I ask "what went right"?